I think you mentioned before that Brian was/is into legos and you were having trouble tying that into the wedding (I think you couldnt find a cake topper). My memory isnt that good lol.
Anyway, there is a seller on etsy who does a lot of cufflinks, jewelry and hair accessories from old-school video games and stuff. They have lego cuff links for $10 that you could surprise Brian with. The seller is "PlasticParadox".